US5010971A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Steering system for vehicles
Assignee: Honda Motor Co Ltd
•
Filing: 1988-05-03
•
Granted: 1991-04-30
•
Expires: 2008-05-03
Abstract
Abstract A steering system (1) for vehicles including a front wheel steering mechanism (1a) for steering front wheels (5) at an angle in accordance with a steering operation of a driver, and a rear wheel steering mechanism (1b) for steering rear wheels (11) at an angle (Sr) in accordance with a travelling state of the vehicle. For the steering of the rear wheel, a reference steering angle (Ar) according to a turning state of the vehicle and a corrective steering angle (Ac) according to a velocity derivative thereof are computed, and the steering angle (Sr) of the rear wheel is obtained by making either an addition or a subtraction of the reference and corrective steering angles at least in accordance with the velocity derivative.
Inventors
- 👤 Tetsuro Hamada
- 👤 Shoichi Sano
- 👤 Yoshimi Furukawa
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 01:59
CPC Classifications
B; B62; B62D; B62D7/00; B62D7/06; B62D7/14; B62D7/15; B62D7/159
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
156 words
A steering system for a vehicle having front and rear steered wheels, comprising: means for detecting a turning state of the vehicle; means for detecting a velocity derivative of the vehicle; means for determining a steering angle for the vehicle's rear wheels dependent on output signals of said turning state detecting means and said velocity derivative detecting means; and means for driving the rear wheels to said steering angle as determined by said determining means; said determining means including means for providing a reference steering angle for the rear wheels dependent on the output signal from said turning state detecting means, and means for correcting said reference steering angle dependent on at least the output signal of said velocity derivative detecting means to establish said steering angle for the rear wheels; and said correcting means correcting said reference steering angle by way of a correction amount and a correction direction both corresponding to said velocity derivative.
Claim 2
Dependent Claim
156 words
A steering system for a vehicle having front and rear steered wheels, comprising: means for detecting a turning state of the vehicle; means for detecting a velocity derivative of the vehicle; means for determining a steering angle for the vehicle's rear wheels dependent on output signals of said turning state detecting means and said velocity derivative detecting means; and means for driving the rear wheels to said steering angle as determined by said determining means; said determining means including means for providing a reference steering angle for the rear wheels dependent on the output signal from said turning state detecting means, and means for correcting said reference steering angle dependent on at least the output signal of said velocity derivative detecting means to establish said steering angle for the rear wheels; and said correcting means correcting said reference steering angle by way of a correction amount and a correction direction both corresponding to said velocity derivative.
Claim 3
Dependent Claim
38 words
A steering system according to claim 1, wherein: said correcting means corrects said reference steering angle in a correction direction which promotes turning of the vehicle when the detected velocity derivative is indicative of a vehicle accelerating state.
Claim 4
Dependent Claim
39 words
A steering system according to claim 1, wherein: said correcting means corrects said reference steering angle in a correction direction which opposes the turning of said vehicle when the detected velocity derivative is indicative of a vehicle decelerating state.
Claim 5
Dependent Claim
65 words
A steering system according to claim 1, wherein: said correction direction of said correction data is the same as the direction in which the front wheels are steered when the detected velocity derivative is indicative of a vehicle accelerating state and is opposite to the direction in which the front wheels are steered when the detected velocity derivative is indicative of a vehicle decelerating state.
Claim 6
Dependent Claim
64 words
A steering system according to claim 1, wherein: said reference steering angle pertains to a steering direction which is either the same or opposite to a steered direction of the vehicle's front wheels; and said correcting means does not correct said reference steering angle when the steering direction of said reference steering angle is opposite to the steered direction of the vehicle's front wheels.
References Cited (Backward Citations)
US4105086A
Cited
JPS5340929A
Cited
US4372407A
Cited
US4313514A
Cited
US4412594A
Cited
US4373603A
Cited
US4417128A
Cited
GB2153311A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1994-04-29 | 1994-10-29 | 1995-04-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1998-04-29 | 1998-10-29 | 1999-04-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2002-04-29 | 2002-10-29 | 2003-04-30 | $7700.00 | Window Closed / Lapsed |